Gunpower gevären lev utan fyllnippel så denna behövs och även fläng adapter om man kör med ex FX pumpen Refill adaptor needed to refill the Gunpower stealth rifles. This adaptor has a 1/4 BSP thread to the Gunpower bottle thread. If you have a dive bottle and hose, then this will screw on in place of the hose, onto the large metal DIN Adaptor. If you are fitting to a pump and hose, then you will also need the 1/8 - 1/4 BSP adaptor.